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how respiration is controlled by the nervous system (medulla oblongata & pons)

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created 1 year ago by lfrenner
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LP7 exam 3

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1

There are 4 respiratory control centers in brain stem

  1. dorsal resp.group
  2. ventral resp.group
  3. pontine resp.group
  4. apneustic center
2

The medulla oblongata contains _____groups

Dorsal & ventral respiratory groups

3

The pons contains______________groups/center

pontine respiratory group & apneustic center

4

The control center that adjusts breathing and O2 and CO2 in the blood

brain stem containing medulla oblongata and pons

5

This group is always function during breathing

Dorsal resp.group

6

This group regulates breathing rate and contraction of diaphragm

Dorsal resp.group

7

This group monitors changes in pH, CO2, O2

Dorsal resp.group

8

This group stimulates the abdominal, external and internal internal intercostal muscles.(accessory resp muscles)

Ventral resp. group

9

This group is associated with deep/forceful breathing

Ventral resp.Group

10

The dorsal respiratory group is located in the ______area of medulla oblongata

Posterior (remember dorsal=back;posterior=back)

11

Pons contains ________respiratory group & _______center

Pontine; apneustic

12

Both segments of the pons help to fine tune

breathing

13

The pontine respiratory group helps to fine tune _____ ___ ____ and monitor ___ ___ ___

breathing rate and rhythm; O2, CO2 and pH

14

3 things that affect breathing rate (order of importance)

  1. pH
  2. CO2
  3. O2
15

The _______ ____gets info from cerebral cortex,limbic system, and hypothalamus

pontine group

16

Which portion of the pons is active during inhalation?

Apneustic center

17

Which portion of the pons works w/ medullary centers to adjust inhalation

Apneustic center

18

Respiratory centers in brain stem communicate w/spinal cord to control breathing and info travels to___

the diaphram via C3,C4,C5 nerve roots

19

The phrenic nerve is located at

C3; C4; C5 nerve roots

20

The thorax is expanded from information traveled from____nerves to ____ muscles

Intercostal, intercostal

21

All the respiratory centers are innervated by the ___ and ____

phrenic; intercostal nerves


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